Fatal编程技术网
  • java/
  • Java 在签名Jar文件之前（但不是之后）找到的类

Java 在签名Jar文件之前（但不是之后）找到的类

java jar

Java 在签名Jar文件之前（但不是之后）找到的类,java,jar,nullpointerexception,code-signing,Java,Jar,Nullpointerexception,Code Signing,我构建了一个jar文件： [mdwilkie@cobalt ~/codesigning]$ jar tvf beforesign.jar 0 Tue Mar 04 14:47:10 PST 2014 META-INF/ 89 Tue Mar 04 14:47:10 PST 2014 META-INF/MANIFEST.MF 560 Tue Sep 08 08:35:48 PDT 2009 ControlPoint.class 1190 Tue Sep 08 08:35

我构建了一个jar文件：

[mdwilkie@cobalt ~/codesigning]$ jar tvf beforesign.jar
     0 Tue Mar 04 14:47:10 PST 2014 META-INF/
    89 Tue Mar 04 14:47:10 PST 2014 META-INF/MANIFEST.MF
   560 Tue Sep 08 08:35:48 PDT 2009 ControlPoint.class
  1190 Tue Sep 08 08:35:48 PDT 2009 Curve.class
  2367 Tue Sep 08 08:35:48 PDT 2009 CurveControls.class
  2417 Tue Sep 08 08:35:48 PDT 2009 CurveControls2.class
  4815 Tue Sep 08 08:35:48 PDT 2009 CurvePanel.class
  1186 Tue Sep 08 08:35:48 PDT 2009 Demo.class
  4108 Tue Sep 08 08:35:48 PDT 2009 DemoPanel.class
  5155 Tue Sep 08 08:35:48 PDT 2009 DisplayPanel.class
  1311 Tue Sep 08 08:35:48 PDT 2009 karst.class
  5411 Tue Sep 08 08:35:48 PDT 2009 Matrix.class
jar文件的构造如下所示：

C:\Users\projects>dir curvefitting_demo
 Volume in drive C has no label.
 Volume Serial Number is 0AED-DBEF

 Directory of C:\Users\projects\curvefitting_demo

08/04/2014  01:19 PM    <DIR>          .
08/04/2014  01:19 PM    <DIR>          ..
08/09/2009  08:35 AM               560 ControlPoint.class
08/09/2009  08:35 AM             1,190 Curve.class
08/09/2009  08:35 AM             2,367 CurveControls.class
08/09/2009  08:35 AM             2,417 CurveControls2.class
08/09/2009  08:35 AM             4,815 CurvePanel.class
08/09/2009  08:35 AM             1,186 Demo.class
08/09/2009  08:35 AM             4,108 DemoPanel.class
08/09/2009  08:35 AM             5,155 DisplayPanel.class
08/09/2009  08:35 AM             1,311 karst.class
08/09/2009  08:35 AM             5,411 Matrix.class
              10 File(s)         28,520 bytes
               2 Dir(s)  160,337,125,376 bytes free

C:\Users\projects>jar cvf beforesign.jar -C curvefitting_demo/ .
added manifest
adding: ControlPoint.class(in = 560) (out= 396)(deflated 29%)
adding: Curve.class(in = 1190) (out= 732)(deflated 38%)
adding: CurveControls.class(in = 2367) (out= 1353)(deflated 42%)
adding: CurveControls2.class(in = 2417) (out= 1408)(deflated 41%)
adding: CurvePanel.class(in = 4815) (out= 2725)(deflated 43%)
adding: Demo.class(in = 1186) (out= 736)(deflated 37%)
adding: DemoPanel.class(in = 4108) (out= 2391)(deflated 41%)
adding: DisplayPanel.class(in = 5155) (out= 3170)(deflated 38%)
adding: karst.class(in = 1311) (out= 981)(deflated 25%)
adding: Matrix.class(in = 5411) (out= 3129)(deflated 42%)

C:\Users\projects>
然后，我使用从GoDaddy购买的证书，按照下面的说明（“方法1”）对jar文件进行签名

现在，当我尝试验证签名的jar文件时，我得到：

$ jarsigner -verify -verbose -certs aftersign.jar
jarsigner: java.lang.NullPointerException
$
及

$java-jar aftersign.jar

[mdwilkie@cobalt ~/codesigning]$ java -jar aftersign.jar
Exception in thread "main" java.lang.NullPointerException
        at sun.security.util.SignatureFileVerifier.getTimestamp(SignatureFileVerifier.java:538)
        at sun.security.util.SignatureFileVerifier.getSigners(SignatureFileVerifier.java:481)
        at sun.security.util.SignatureFileVerifier.processImpl(SignatureFileVerifier.java:225)
        at sun.security.util.SignatureFileVerifier.process(SignatureFileVerifier.java:193)
        at java.util.jar.JarVerifier.processEntry(JarVerifier.java:294)
        at java.util.jar.JarVerifier.update(JarVerifier.java:205)
        at java.util.jar.JarFile.initializeVerifier(JarFile.java:338)
        at java.util.jar.JarFile.getInputStream(JarFile.java:403)
        at sun.misc.URLClassPath$JarLoader$2.getInputStream(URLClassPath.java:706)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:266)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: Demo. Program will exit.
但是Demo.class存在（在两个jar文件中）：

我使用的是java 1.6版，从昨天起我就遇到了同样的问题。看起来问题出在时间戳上。尝试使用其他时间戳服务器，而不是tsa.starfieldtech.com
你可以试试，或者

听起来像是一个建议/评论，而不是答案。非常感谢Ulf，这真的拯救了这一天。我想我们已经使用tsa.starfieldtech.com至少10年了，没有任何问题。我现在转到geotrust，一切都恢复了正常。今天我也遇到了同样的问题。使用不同的时间戳服务器修复了我的问题（我使用了）。 
$ jarsigner -verify -verbose -certs aftersign.jar
jarsigner: java.lang.NullPointerException
$ 

[mdwilkie@cobalt ~/codesigning]$ java -jar aftersign.jar
Exception in thread "main" java.lang.NullPointerException
        at sun.security.util.SignatureFileVerifier.getTimestamp(SignatureFileVerifier.java:538)
        at sun.security.util.SignatureFileVerifier.getSigners(SignatureFileVerifier.java:481)
        at sun.security.util.SignatureFileVerifier.processImpl(SignatureFileVerifier.java:225)
        at sun.security.util.SignatureFileVerifier.process(SignatureFileVerifier.java:193)
        at java.util.jar.JarVerifier.processEntry(JarVerifier.java:294)
        at java.util.jar.JarVerifier.update(JarVerifier.java:205)
        at java.util.jar.JarFile.initializeVerifier(JarFile.java:338)
        at java.util.jar.JarFile.getInputStream(JarFile.java:403)
        at sun.misc.URLClassPath$JarLoader$2.getInputStream(URLClassPath.java:706)
        at sun.misc.Resource.cachedInputStream(Resource.java:77)
        at sun.misc.Resource.getByteBuffer(Resource.java:160)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:266)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: Demo. Program will exit.

$ jar tvf beforesign.jar
     0 Tue Mar 04 14:47:10 PST 2014 META-INF/
    89 Tue Mar 04 14:47:10 PST 2014 META-INF/MANIFEST.MF
   560 Tue Sep 08 08:35:48 PDT 2009 ControlPoint.class
  1190 Tue Sep 08 08:35:48 PDT 2009 Curve.class
  2367 Tue Sep 08 08:35:48 PDT 2009 CurveControls.class
  2417 Tue Sep 08 08:35:48 PDT 2009 CurveControls2.class
  4815 Tue Sep 08 08:35:48 PDT 2009 CurvePanel.class
  1186 Tue Sep 08 08:35:48 PDT 2009 Demo.class
  4108 Tue Sep 08 08:35:48 PDT 2009 DemoPanel.class
  5155 Tue Sep 08 08:35:48 PDT 2009 DisplayPanel.class
  1311 Tue Sep 08 08:35:48 PDT 2009 karst.class
  5411 Tue Sep 08 08:35:48 PDT 2009 Matrix.class
$ jar tfv aftersign.jar
   769 Tue Apr 08 13:31:46 PDT 2014 META-INF/MANIFEST.MF
   872 Tue Apr 08 13:32:02 PDT 2014 META-INF/CODESIGN.SF
  7304 Tue Apr 08 13:32:02 PDT 2014 META-INF/CODESIGN.RSA
     0 Tue Mar 04 14:47:10 PST 2014 META-INF/
   560 Tue Sep 08 08:35:48 PDT 2009 ControlPoint.class
  1190 Tue Sep 08 08:35:48 PDT 2009 Curve.class
  2367 Tue Sep 08 08:35:48 PDT 2009 CurveControls.class
  2417 Tue Sep 08 08:35:48 PDT 2009 CurveControls2.class
  4815 Tue Sep 08 08:35:48 PDT 2009 CurvePanel.class
  1186 Tue Sep 08 08:35:48 PDT 2009 Demo.class
  4108 Tue Sep 08 08:35:48 PDT 2009 DemoPanel.class
  5155 Tue Sep 08 08:35:48 PDT 2009 DisplayPanel.class
  1311 Tue Sep 08 08:35:48 PDT 2009 karst.class
  5411 Tue Sep 08 08:35:48 PDT 2009 Matrix.class